Folding flue window



Jan. 21, 1958 J. P; TRAVIS FOLDING FLUE wmnow 3 Sheets-Sheet 1 Filed Aug. 26, 1955 INVENTOR.

77% W5 Y W) g) @220257 Q14 Jan. 21, 1958 J. P. TRAVIS 2,820,514

' FOLDING FLUE WINDOW Filed Aug. 26, 1955 a Sheets-Sheet 2 IN V EN TOR.

JOHN F: TRAVIS.

Jan. 21, 1958 J. P. TRAVIS 2,820,514

. FOLDING FLUE WINDOW Filed Aug. 26, 1955 3 Sheets-Sheet 3 Q\\ R\ P IN VEN TOR.

JOHNP. TRA v/s;

4 Claims. (Cl; 160-187) My invention relates to a folding: window and more particularly to a window made up of two sashes pivoted togetheron a vertical axis and provided with a flue. or air passage between their pivoted edges when in their open positions,

One of the principal objects of the invention is to provide a window which, when in its closed position, will be wind and. water tight, but when open, will provide a ventilating space extending from the top to the bottom of the window.

Another object of the invention is to provide a window comprising two sashes pivoted together in side edge to side edge relation and supported entirely upon operating links pivoted to a centralupright.

Still another objectof the invention is to provideawindow which may be cleaned and. repaired on both faces from within the, building and without the use of outside scaff ld g- Another object of this invention is to eliminate the necessity of a window frame, the window sashes being supported-by andengaging directly upon the grid structure of a building facade or curtain wall.

A further object of this invention is to provide a grid structure which serves as a frame for the window sashes with sealing means to seal directly against the sashes, when the window is in its closed position.

Other objects of the invention will appear hereinafter throughout the specification.

Referring to the drawings:

Figure 1 is a front elevation showing the outside face of the window in its closed position;

Figure 2 is a horizontal sectional view of the window in its open position showing the window sashes and the grid structure which serves as a window frame in section;

Figure 3 is a view similar to Figure 2 but showing the window in its closed position;

Figure 4 is a detail view in perspective showing the lower supporting means for the sashes and its relation to the grid structure;

Figure 5 is a detail view in perspective showing portions of the hinged edges of the sashes and their relation to the sealing means and the supporting links carried by the adjacent grid portions;

Figure 6 is a detail View in section, taken on the line 6-6 of Figure 5, and showing the hinge connections between the sashes and the supporting links;

Figure 7 is a detail view in section, taken on the line 77 of Figure 5, and showing a pivot at the outer end of one of the supporting links and the relation of the weather seal on the sill stop to the adjacent window sash; and

Figure 8 is a detail view in section, taken on the line 83 of Figure 4, showing a part of one of the window sashes in a partially opened position and its relation to the sill and side frame grid portions.

Referring to the drawings, 2 represents a rectangular opening in the grid 4 of a facade of a building in which a pair of window sashes 6 are pivotally carried by two pairs of pivoted links ,8. As shown in Figures 2, 3, 4 and 5, the

.it@. States Patent vertical bars of the grid at the sides of the opening 2 are: of substantially li-shape in cross section to form. vertically extending channels 10 into which flanges 12 at one. side of: the I -bar project. The inner edge of each of these. flanges is provided with a groove to receive a weather seal 14- against which the adjacent sash seals, when the window is in its closed position.

The grid opening 2 is divided by a vertically extending bar 16 of substantially T-shape in cross section. A flange 18 extends toward the outside of the window frorneach end of the top of the T formation and the outer edge of each flange is provided with a groove and weather seal 20 similar to those used on the verticalv side bars. Suitable. stop bars 22 and 24 are used at the top and bottom, respectively, of the grid. These. stop bars are each provided with a sealing means 26 similar to that on the vertical bars of the grid.

The window sashes 6 are arranged to swing outwardly from the side of the building and each sash covers onehalf of the opening 2 as clearly shown in Figure 1. The adjacent edges of the two sashes are ordinarily spaced apart approximately six inches when in their closed position. but it will be understood that this distance may be changed as desired. When in their closed position, the spaced apart edge portions of the twov sashes engage and seal against the weather seals 29 on the central bar 16, as clearly shown in Figure 5. In like manner, the other, edges of the sashes engage and seal against the seals 14 and 26. The upper and lower edgeof each of the sashes is provided with a hinge bar 28 which projects past one vertical edge of the-sash toward the adjacent edge of'the other sash. The projectingends of these bars are pivoted together at 30, one end being offset with respect to the other at the pivot so' that the upper and lower edges of the sashes are maintained in substantially horizontal alignment.

As shown in Figures 1, 4, 5 and 6, the sashes-are supported entirely. by the two pairs of operating links: 8; arranged one pair at the top and the other at the bottom of; the window opening. The inner ends of eachpair'of:

links are: secured in a notch 32': in thecentral flange 341 of the vertically extending bar 16 by a fixed pivot 36. The opposite ends of the links 8 are pivoted at 38 to the central portions of the adjacent edges of the sashes. The length of each of the links 8 is of substantially the same length as the distance between the pivots 30 which connect the bars 28 and the pivots 38 so that the sashes may move to and from the dotted and full line positions of Figure 2. in the window sashes shown, 46 represents the frame and 42 the glass.

While the window sashes have been shown and described as being moved outwardly from the side of the building, it will be understood that they could readily be arranged to swing into a room in the building, if desired.

The air flue 4 2-, which is formed by the space between the inner edges of the sashes when they are in their open positions, serves as a means of ventilation for a room or building. By setting the sashes at different angles to each other, substantially draft-free ventilation may be obtained at all times.

When it is desired to open the window, the sashes are merely moved outwardly to the position of Figure 2. The window is closed by a reverse movement and, when in this position, is entirely sealed by the seal members provided on the grid structure.

While the upright bars of the grid structure are shown as being of a plural channel form, such specific form is not necessary insofar as the operation of the window is concerned, and any suitable form may be used.

Solid panels 46 are shown in the outside channels 10 of the grid at each side of the window, but it will structure that may be used to mount a window in the 'side of a building.

The window of this application is an improvement on the window patented by Richard B. Browne on October 3, 1916, and known in the trade as the Browne window.

j-It ditfers therefrom principally in the ventilating flue between the sashes and in the specific manner of supporting and sealing them.

The above description and drawings disclose one em bodiment of the invention, and specific language has been employed in describing the figures. It will, nevertheless, be understood that no limitations of the scope of the invention are thereby contemplated, and that various alterations and modifications may be made as would occur to one skilled in the art to which the invention relates.

I claim:

1. A closure construction comprising a vertically disposed grid element, two rectangular openings of sub stantially equal size in said grid element, said openings being separated by a vertically arranged bar, disposed in the plane of said grid element, a closure for each opening, one side face of said grid element and said bar constituting jamb portions for said closures when in their closed positions, means to hinge one vertical edge of one closure to the adjacent vertical edge of the other closure, said hinge means comprising a hinge at both the top and the bottom of said closures, each hinge comprising a pair of bars pivoted together at one end and each having its other end secured to the adjacent horizontal edge of the adjacent closure, said hinge bars being disposed within the plane of said closures, the adjacent ends of said hinge bars each extending a substantial distance beyond the edge of the respective closure, the area enclosed by said vertical edges of said closures and the extended ends of said hinge bars providing a ventilating space between said closures when they are in their open positions, and

means to pivotally support said closures comprising a pair of pivoted links at both the top and the bottom of said grid elements, said links being arranged in the same vertical plane as said hinge bars when said closures are in their closed positions, a single pivot connecting one end of each of the links of each pair to said vertically arranged bar, the other end of each of the links of each pair being pivotally connected to the adjacent horizontal edge of one of said closures, the length of each link being substantially equal to the distance between the pivot which connects said link to the adjacent closure and said hinge means, said closure being supported solely by said links, and said ventilating space being closed by said vertically arranged bar when said closures are in their closed positions.

2. A closure construction as in claim 1, wherein said vertically arranged bar is provided with a longitudinally extending flange arranged at right angles to the plane of said closures when in their closed positions and extending from one side of said grid element to the other, and means to hold said links out of contact with said closures at their pivotal connections therewith.

3. A closure construction as in claim 2, wherein said vertically arranged bar is provided with a notch adjacent each end, said closures being window sashes, and said grid element and said vertically arranged bar being provided with sealing means around said openings to seal the joints between said window sashes, said grid element, and said vertically arranged bar.

4. A closure construction as in claim 3, wherein each of said single pivots of said pairs of links is secured in a wall of one of said notches, and said notches receive said hinge means when said window sashes are in their closed positions, said ventilating space extending from the top to the bottom of said window sashes and comprising a rectangular opening between the adjacent edges of said sashes.

References Cited in the file of this patent UNITED STATES PATENTS 1,880,312 Brewer Oct. 4, 1932 FOREIGN PATENTS 5,609 Netherlands July 15, 1921 

